We have spent lovely 3 days in Austria, near the border in an awesome wellness place, which is all about kids and parents, they got everything what you need when you have kids, even babies. We were swimming, went on the bikes, had lovely food and enjoyed ourselves very much. This is the website, we totally recommend the place, especially with children: http://www.sonnenpark.at/
We also left our camera there and unlike a lot of place they have found it and sent it back to us, so thanks for that, here are some pictures and videos.
Tristan going for his massage